One more: Map10 UV Pacifist/Speed in 0:05. This was difficult - my best previous time was 0:12 (after lots of attempts), and then suddenly this little miracle happened. If you watch it with a walkcam you'll see that a sergeant shoots me with absolutely perfect timing.

UV is much harder than NM on this map because the monsters are bunch of useless dozy gits. :p

It's a Boom demo.

And another: Map23 UV Speed in 1:53. No tricks here; just a good old-fashioned speedrun. Lots of monsters blocking the path, so there's a fair amount of killing early on and dodging towards the end. It's also a Boom demo.

BTW, can you quit a recording with "q", when you use Andrey's prboom version? And it is possible with it to do another try without deleting the previous .lmp. Recording with the original prboom 2.2.4 sometimes gets on my nerves.

No, I don't think there is a way to quit in just one key-press. "Quit" is F10 by default (you can remap to "Q" if you like), but you still need to press "Y" to confirm it.

Budko's version will not overwrite an existing demo; you could make a batch file to take care of that each time, of course.

Budko's exe does have two major advantages over the standard 2.2.4 for recording ordinary demos though:
1) There is no silly "demo recorded" dialogue box that pops up. That really gets on my nerves - just one more thing to do between attempts, and it's utterly pointless.
2) You get GF50 gametics, rather than GF49.

If you use Budko's exe, remember to turn off the permanent strafe-50 and strafe-50 while turning. The cfg file in the zip has them turned on.

I moved the "lag" discussion to its own thread. Makes sense I think; maybe more people who can help will look at it now.

The only Icarus related comment in the moved posts was Vince's "I was wondering, if one would go for a TAS icarus run, how many times would he have to suicide ? :)"

Not all, since some have switch-style exits. :( But quite a lot for sure. Whether you'd make use of every possibility for one, I don't know. In some of the maps it makes only a small difference if you use the red key or use a suicide exit. I had made some notes on each map's suitability for suicide exits, but it's buried in amongst a big stack of papers ATM. Some of my presumptions were wrong too (e.g. map04). If I find it, I'll post details. A 30ic or 30in TAS run would certainly be hilarious to watch.

I haven't had any time to play lately, so I kinda forgot about this :p
I completed map08 NM in 2:33, and UV in 1:31 using a little trick :)
The demos don't look good, but I don't expect to be able to play soon :x

I'm quite happy with this, as it was rather a pain to record (100 attempts? 200? - I wasn't counting). I would have settled for a 0:21 (following a 0:22 where I'd fumbled the exit switch), but suddenly I got a run where the red key area went unbelievably well.

Woo! Neatness! I wanna see someone do a movie. AFAIK, there isn't one. If some talented recorder would undertake one, that would rock. I know requesting something big like this isn't polite or smart, though, so I leave with saying Icarus is good, and these demos are teh cool.

I think Icarus is an excellent recording environment, but making any good 30-level TAS demo is a huge undertaking (especially if you have little experience with TAS). No one has made a 30sc, and Yonatan Donner is the only person to have TASed a 30hr - and both TAS and HR were projects that he was a principal driving force behind.

A couple more, both ending with the player dead and no harm caused to monsters:

Map10 NM100S (+ Pacifist) in 0:38. There are five secrets to visit, and I skip the red key and use a dead exit instead. Perhaps it would be a little bit quicker to use the pool room rather than the dining room, but I don't think there's much in it (but a big difference healthwise).

I've done a few more Icarus strollers, but I'm only happy with one of them:Map15 (secret exit) UV Stroller in 0:31. Uses the same basic route as my NM run, but features a funny trick to overcome the fact that I can't skip a one-time-only teleport linedef by running over it.